Portulacaceae 
Portulaca lutea Sol, 
Christophersen 34 (BISH), Bryan 1318 (BISH), Marshall 3, 4 (USNM), Long 
2388 , 2389 , 2396 , 2402 (UH). Native herb common in •flat areas on the north 
and south side and formerly more abundant on guano soils of the central portion 
of the island. 
* 
« 
Portulaca oleracea L. ' 
Bryan 1313 (BISH), Marshall 2 (USNM), Long 2154, 2375 (UH). Introduced after 
Christophersen's 1924 visit. Found on the southwest and northeast sides in 
1964.. • • ' 
Zygophyllaceae 
• I 
4 
Tribulus cistoides L. 
Christophersen 26 (BISH), Bryan s. n. (BISH), Marshall 14 (USNM), Long 
2156, 2393 (UH). ■ A native herb mentioned by Emerson ( 1869 ). Found in 1964 
as scattered masses on the interior flat portion of the island, very often 
in disturbed sites. 
Euphorbiaceae 
I 
Euphorbia hirta L . 
Christophersen 35 (BISH), Bryan 1310 (BISH), Marshall’ 6 (USNM), Long 2l64> 
2170, 2365 (UH). Common locally in sand on the southwest end of the island 
probably introduced during the guano mining operations. 
Phyllanthus amarus Sch. and Thonn. 
Christophersen 28 (BISH), Marshall 5 (USNM), Long 20^9* 2374 (UH). 
Probably introduced by guano mining activities and later collected from sand 
on the west beach crest by Christophersen, Found on the interior of the 
island in 1964. \ 
Tiliaceae 
Trlumfetta procumbena Forst. f* 
Christophersen 29'(BISH), Bryan 1320 (BISH), Long 2l6o, 2364 (UH). 
Prostrate native vine confined to the northwest and north sand beaches, 
common locally. 
